Key-fastener.



F. N. HULZINGER.

KEY FASTENER.

APPLICATION FILED NOV. 14, I916.

1,287,316. Patented Dec. 10, 1918.

INVENTOR ATTORNEY FRANK N. HOLZINGER, OF PEOIRIA, ILLINOIS.

KEY-FASTENER.

Specification of Letters Patent.

Patented Dec. 10, 19i's.

Application filed November 14, 1916. Serial N 0. 131,308.

To all whom it may concern:

Be it known that I, FRANK N. HOLZINGER, a citizen of the United States, residing at Peoria, in the county of Peoria and State of llinois, have invented certain new and useful provement-s in Key-Fasteners, of which the following is the specification.

Iy invention relates to a key fastener or means to secure a key against turning throug tampering therewith by a tool insorted into the key hole from the outside.

.I aim to provide a novel form of device of this nature capable of manufacture at low cost, and improved particularly with respect to the provision of a novel means to fasten the device in engagement with the key; to provide a mounting block with one or more elongated grooves receiving ends of the fastener and leading into sockets into which said ends clip, and also to provide a means to maintain the said ends in said socket and as well brace the fastener against distortion should it be attempted to operate the key.

such as will hereinafter appear, in view, the

invention has been embodied in one pre ferred form as illustrated in accompanying drawings wherein Figure l is a perspective view illustrating my improvements applied to a door key, which is shown in connection with fragments of the door and the lock;

Fig. 2 is a cross sectional view taken across my improved device along the line 22 of Fig. 1, and

Fig. 3 is a vertical sectional view taken through the mounting block.

Referring specifically to the drawings, I have shown a conventional key at 1 in connection with a,door lock 5 of a door 6. Such parts are to be taken merely as representative, since the improvements are capable of use in connection with keys generally, although the device is particularly capable of use in connection with door keys. Such keys are oftentimes tampered with, for instance on the part of burglars, when they remain in the key hole, being inserted from the inside, as is customary. A tamperer operating from the outside, oftentimes tries to dislodge the key. My improvements mount it so that it cannot be turned by tampering from the outside and as a result cannot be dislodged from the key hole.

In carrying out my improvements, I pro- With the above and additional objects,

vide a preferably one piece fastening member of spring or resilient wire although other material may suffice. This member has elongated side arms 7 joined by a bridge at the top and which fastening lobe or lug at 8 and also to provide shoulders at 9. The arms 7 incline, being closer together at their base than at the bridge, and both inclining to the same extent from the vertical median line. As the arms are thus upwardly inclined, a clasp, brace and adjuster 10 may tudinally of the arms to vary the distance between the arms at their base.

Secured to the door as by means of screws 1, is a mounting block 12. At the side of this mounting block, elongated grooves 13 are provided and each groove leads to an inwardly extending socket I141. [Into the sockets 14 extend pivot lugs 15 formed substantially at right angles to and integral with the arms 7.

Member 10 may be of any suitable construction but preferably comprises a single strip of metal having flanges 16 bent around the arms 7 as shown.

Normally the fastener 7 depends vertically from the mounting block with the lugs 15 at the lower end of the recesses or grooves To enable these lugs 15 to disengage the sockets 14 and then move in the the adjuster 10 must first be lowered. In order to fasten the key, after it has been inserted, it is made to occupy the position shown in Fig. 1. The fastener is then swung upwardly and pushed upwardly so that the lug 8 extends through the openings of the bow of the key with engaging the key. The arms 7 are tensioned so that they will clip into the grooves 13 to prevent detachment of the arms 7 from the block 12 but are not tensioned sufficiently to permit the lugs 15 to clip into the sockets 14. Therefore after the fastener is brought into fastening engagement with the key, the adjuster 10 which is adjacent the block 12 is moved toward the key and since the arms 7 are inclined, it will move the arms inwardly and force the lugs 15 into the sockets 14 thus fastening the'fastener in place. The fastener will remain in adjusted position due to the friction between the flanges 16 and the arms 7.

In addition to the function set forth, ad-

juster 10 serves to brace the arms 7 adjacent the key and thus if the key should be turned,

be moved longigrooves 13,-

the shoulders 9 tothe saidanounting means to key-engaging positionandcbeing also movable in a plane atian' angle; towthe patlr of the init-ial movementrthereofg and means to engagsthe resilient armsto-supportthe fastener in' key engaging position.

2: A key fastening device including a fastenerxmember, .a.-mo1.mting mei her therefor, said member having converging arms,

one of; said mcmbers'having a groove 1Z1.

wliichpsaid arms aremovable, means through Wll'lGl'f'SEtltl groovegleads to receive said arms, andtosupport theafastener member in fastening position, said fastener memberbeing movable into: engagement with said means.

3.. A key fastener device including a fastener,-, announting; member therefor, said mounting member having a groove and a socket iowhichsaid groove leads, said fastenerz having arms, one of ,said, arms being inclined, means -on one-of said, arms movable iirsaid; groove, and tensioned to normally remainrthefei-n, and means movable longitudinallyoffirhe'. arms cooperating with the inelinedarm to move the same so that said means 1 will, extend into said socket.

4.; A. key fasteningdevice including a key fastener, a--.mounting therefor, said mounting ha-vinga supporting, means for the. fastenet, said; fastener; and supporting 1 means being, normally disengaged to, permit movefined ment of the fastener relatively to the key, and means associated with the fastener to maintain the fastener in operative relation to the supporting means.

5. A key fastening device including a fastener, said fastener having arms, a mounting member for the fastener, said mounting member having a groove, a lug on one of said arms, said arms being tensioned so that said lug will normally remain in saidgroove, said mounting member having a socket, and" meanscooperating with the arms to move them relatively so that said lug will enter said'socket.

6. A key fastening device including a fastener having elongated arms joined by a: bridge, said bridgehaving a portion to extendthroughi the bow of a key and hav ing shoulders, to bedirectly engaged by the key, and said arms extending downwardly and inwardly from the key and atitheirbase terminating in lugs, said mountingmember being provided with grooves: into' which, said: lugs: normally extend, said mounting member-also being provided' with; sockets to. which said grooves lead, means movable longitudinally of the arms to move. the arms relatively and said lugs into said sockets, and said means serving to brace the fastener adjacent the bridge against: distortion through attempted turning of the key.

7. A, key fastener device including a.

fastener memberhaving a. pair of converging. arms, a mountingmember therefor, and a bridge interposed between said arms and integral therewi"h,- a lng'formed on said bridge to engage the key when said. arms are in elevated position, and means movable longitudinally withthe convergingarms cooperating therewith to move them so that said arms will extend into said socket. I

In testimony whereof I aflix my signature in presence of two witnesses.

. FRANK N. HOLZINGER. Witnesses Gno. H. Itmnswonrn, Annron A. Gnnnvna- Cnpiesoiithispstentmay be obtained for five cents each, by addressing the "(Jommissionerof Patents,

WashingtonJLC.

amounting member, 

